my daughter is in the 95% but she is proportionate and looks relatively thin because she is also tall... her cousin of the same age however is only in the 23% and she is perfectly healthy too. Genetics can play a big role in it, like my daughters dad is 6'7", probably why she is so tall, but her cousins dad is on 5'3", which may explain why she is on the smallerside. Check with your doctor to make sure there is nothing of concern and if it is, enjoy having a smaller child!! My daughter is 19 mos and wears 3T clothing and a size 9 shoe!! Her cousin is still in 12 mo clothes (again they are the same age) and wears a size 3 shoe!!